FR2363254A1 - AUTOMATIC MICROPHONE MIXER - Google Patents
AUTOMATIC MICROPHONE MIXERInfo
- Publication number
- FR2363254A1 FR2363254A1 FR7626091A FR7626091A FR2363254A1 FR 2363254 A1 FR2363254 A1 FR 2363254A1 FR 7626091 A FR7626091 A FR 7626091A FR 7626091 A FR7626091 A FR 7626091A FR 2363254 A1 FR2363254 A1 FR 2363254A1
- Authority
- FR
- France
- Prior art keywords
- automatic microphone
- microphone mixer
- average amplitude
- signal
- mixer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/02—Remote control of amplification, tone or bandwidth
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/341—Muting when no signals or only weak signals are present
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
- H04R2201/403—Linear arrays of transducers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
L'invention concerne un mélangeur automatique de microphones. Il comporte plusieurs canaux d'entrée comprenant chacun un circuit de commande. Chacun de ces circuits de commande reçoit le signal d'entrée correspondant et le multiplie par le quotient de l'amplitude moyenne de ce signal par l'amplitude moyenne de la somme de tous les signaux d'entrée. L'invention s'applique à la sonorisation de salles.The invention relates to an automatic microphone mixer. It has several input channels each comprising a control circuit. Each of these control circuits receives the corresponding input signal and multiplies it by the quotient of the average amplitude of this signal by the average amplitude of the sum of all the input signals. The invention applies to sound systems for rooms.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/575,951 US3992584A (en) | 1975-05-09 | 1975-05-09 | Automatic microphone mixer |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2363254A1 true FR2363254A1 (en) | 1978-03-24 |
FR2363254B1 FR2363254B1 (en) | 1981-01-09 |
Family
ID=24302362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7626091A Granted FR2363254A1 (en) | 1975-05-09 | 1976-08-30 | AUTOMATIC MICROPHONE MIXER |
Country Status (4)
Country | Link |
---|---|
US (1) | US3992584A (en) |
DE (1) | DE2640006C2 (en) |
FR (1) | FR2363254A1 (en) |
GB (1) | GB1516256A (en) |
Families Citing this family (68)
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---|---|---|---|---|
US4181818A (en) * | 1976-11-05 | 1980-01-01 | Gentex Corporation | Personal amplifier system |
US4177356A (en) * | 1977-10-20 | 1979-12-04 | Dbx Inc. | Signal enhancement system |
US4149032A (en) * | 1978-05-04 | 1979-04-10 | Industrial Research Products, Inc. | Priority mixer control |
US4495638A (en) * | 1978-05-17 | 1985-01-22 | Body Sonic Kabushiki Kaisha | Audio-band electro-mechanical vibration converter |
US4239938A (en) * | 1979-01-17 | 1980-12-16 | Innovative Electronics Design | Multiple input signal digital attenuator for combined output |
WO1980001529A1 (en) * | 1979-01-17 | 1980-07-24 | Innovative Electronic Designs | Multiple program audio system |
US4374300A (en) * | 1979-10-18 | 1983-02-15 | Innovative Electronics, Inc. | Sound mixer devices |
US4357492A (en) * | 1980-10-03 | 1982-11-02 | Eugene Campbell | Automatic microphone mixing apparatus |
US4454609A (en) * | 1981-10-05 | 1984-06-12 | Signatron, Inc. | Speech intelligibility enhancement |
JPS5921200A (en) * | 1982-07-26 | 1984-02-03 | Minolta Camera Co Ltd | Hearing aid incorporating radio set |
US4489442A (en) * | 1982-09-30 | 1984-12-18 | Shure Brothers, Inc. | Sound actuated microphone system |
US4941187A (en) * | 1984-02-03 | 1990-07-10 | Slater Robert W | Intercom apparatus for integrating disparate audio sources for use in light aircraft or similar high noise environments |
US4598418A (en) * | 1985-02-05 | 1986-07-01 | Griffith Jr Eugene R | Sound system employing automatic proportional amplification |
US4864627A (en) * | 1986-11-07 | 1989-09-05 | Dugan Daniel W | Microphone mixer with gain limiting and proportional limiting |
DE3734447C1 (en) * | 1987-10-12 | 1989-05-18 | Telefonbau & Normalzeit Gmbh | Conference speakerphone |
US4881123A (en) * | 1988-03-07 | 1989-11-14 | Chapple James H | Voice override and amplitude control circuit |
US4885792A (en) * | 1988-10-27 | 1989-12-05 | The Grass Valley Group, Inc. | Audio mixer architecture using virtual gain control and switching |
US5204908A (en) * | 1990-09-26 | 1993-04-20 | Lectrosonics, Inc. | Sound system with rate controlled, variable attenuation |
US5490219A (en) * | 1991-03-04 | 1996-02-06 | Motorola, Inc. | Noise canceling microphone with visual feedback |
US5309517A (en) * | 1991-05-17 | 1994-05-03 | Crown International, Inc. | Audio multiplexer |
US5259035A (en) * | 1991-08-02 | 1993-11-02 | Knowles Electronics, Inc. | Automatic microphone mixer |
US5291558A (en) * | 1992-04-09 | 1994-03-01 | Rane Corporation | Automatic level control of multiple audio signal sources |
US5197098A (en) * | 1992-04-15 | 1993-03-23 | Drapeau Raoul E | Secure conferencing system |
JP2757740B2 (en) * | 1992-11-30 | 1998-05-25 | ヤマハ株式会社 | Distortion circuit |
US5414776A (en) * | 1993-05-13 | 1995-05-09 | Lectrosonics, Inc. | Adaptive proportional gain audio mixing system |
US5440643A (en) * | 1993-05-13 | 1995-08-08 | Apple Computer, Inc. | Audio peripheral mixer circuit and method for noise reduction |
US5652800A (en) * | 1995-11-02 | 1997-07-29 | Peavey Electronics Corporation | Automatic mixer priority circuit |
US5673327A (en) * | 1996-03-04 | 1997-09-30 | Julstrom; Stephen D. | Microphone mixer |
US6125343A (en) * | 1997-05-29 | 2000-09-26 | 3Com Corporation | System and method for selecting a loudest speaker by comparing average frame gains |
FI980559A (en) * | 1998-03-13 | 1999-09-14 | Nokia Mobile Phones Ltd | Audiosummauskytkentä |
US6233548B1 (en) | 1998-07-29 | 2001-05-15 | Stephen R. Schwartz | Method and apparatus for performing level compensation for an input signal |
US6690804B2 (en) * | 2000-06-28 | 2004-02-10 | Peavey Electronics Corporation | Lighted microphone cable indicator |
US7206421B1 (en) * | 2000-07-14 | 2007-04-17 | Gn Resound North America Corporation | Hearing system beamformer |
US20030050994A1 (en) * | 2001-07-27 | 2003-03-13 | Robert Pollack | Method of aggregating, classifying, reporting and cross-tabbing data in real time |
CN1993883B (en) * | 2004-05-18 | 2010-04-21 | Nxp股份有限公司 | Amplifier circuit with automatic gain correction |
KR100638337B1 (en) * | 2005-09-05 | 2006-10-24 | 주식회사 비손하이테크 | Apparatus and method for noise removal and mobile phone with noise removal function |
US7957546B2 (en) * | 2005-12-13 | 2011-06-07 | Waller Jr James K | Multi-channel noise reduction system with direct instrument tracking |
US9040806B1 (en) | 2005-12-13 | 2015-05-26 | James K. Waller, Jr. | Multi-channel noise reduction system with direct instrument tracking |
EP2504712B1 (en) * | 2009-11-23 | 2021-03-24 | Hittite Microwave LLC | Logarithmic mean-square power detector |
EP2504921B1 (en) * | 2009-11-23 | 2020-06-17 | Hittite Microwave LLC | Logarithmic mean-square power detector with servo control loop |
US8542849B2 (en) | 2010-08-02 | 2013-09-24 | Rane Corporation | Apparatus, method, and manufacture for connectable gain-sharing automixers |
US9625498B2 (en) | 2010-09-17 | 2017-04-18 | Hittite Microwave Llc | RMS and envelope detector |
US9589550B2 (en) | 2011-09-30 | 2017-03-07 | Harman International Industries, Inc. | Methods and systems for measuring and reporting an energy level of a sound component within a sound mix |
KR101219709B1 (en) * | 2011-12-07 | 2013-01-09 | 현대자동차주식회사 | Auto volume control method for mixing of sound sources |
US9158496B2 (en) * | 2012-02-16 | 2015-10-13 | High Sec Labs Ltd. | Secure audio peripheral device |
US9288570B2 (en) | 2013-08-27 | 2016-03-15 | Bose Corporation | Assisting conversation while listening to audio |
US9190043B2 (en) | 2013-08-27 | 2015-11-17 | Bose Corporation | Assisting conversation in noisy environments |
US9143107B2 (en) * | 2013-10-08 | 2015-09-22 | 2236008 Ontario Inc. | System and method for dynamically mixing audio signals |
US9451359B2 (en) * | 2014-11-25 | 2016-09-20 | Invensense, Inc. | Preamplifier for a microphone |
US9565493B2 (en) | 2015-04-30 | 2017-02-07 | Shure Acquisition Holdings, Inc. | Array microphone system and method of assembling the same |
US9554207B2 (en) | 2015-04-30 | 2017-01-24 | Shure Acquisition Holdings, Inc. | Offset cartridge microphones |
JP2017083600A (en) * | 2015-10-27 | 2017-05-18 | パナソニックIpマネジメント株式会社 | On-vehicle sound pickup device and sound pickup method |
US9941987B2 (en) * | 2016-06-03 | 2018-04-10 | Crestron Electronics, Inc. | Single knob pre-amplifier gain-trim and fader |
US10367948B2 (en) | 2017-01-13 | 2019-07-30 | Shure Acquisition Holdings, Inc. | Post-mixing acoustic echo cancellation systems and methods |
EP3804356A1 (en) | 2018-06-01 | 2021-04-14 | Shure Acquisition Holdings, Inc. | Pattern-forming microphone array |
US11297423B2 (en) | 2018-06-15 | 2022-04-05 | Shure Acquisition Holdings, Inc. | Endfire linear array microphone |
WO2020061353A1 (en) | 2018-09-20 | 2020-03-26 | Shure Acquisition Holdings, Inc. | Adjustable lobe shape for array microphones |
JP7230427B2 (en) | 2018-10-24 | 2023-03-01 | ヤマハ株式会社 | SOUND SIGNAL PROCESSING DEVICE, MIXER, AND SOUND SIGNAL PROCESSING METHOD |
US11558693B2 (en) | 2019-03-21 | 2023-01-17 | Shure Acquisition Holdings, Inc. | Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality |
CN113841419A (en) | 2019-03-21 | 2021-12-24 | 舒尔获得控股公司 | Housing and associated design features for ceiling array microphone |
US11438691B2 (en) | 2019-03-21 | 2022-09-06 | Shure Acquisition Holdings, Inc. | Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition functionality |
EP3973716A1 (en) | 2019-05-23 | 2022-03-30 | Shure Acquisition Holdings, Inc. | Steerable speaker array, system, and method for the same |
US11302347B2 (en) | 2019-05-31 | 2022-04-12 | Shure Acquisition Holdings, Inc. | Low latency automixer integrated with voice and noise activity detection |
EP4018680A1 (en) | 2019-08-23 | 2022-06-29 | Shure Acquisition Holdings, Inc. | Two-dimensional microphone array with improved directivity |
US12028678B2 (en) | 2019-11-01 | 2024-07-02 | Shure Acquisition Holdings, Inc. | Proximity microphone |
US11552611B2 (en) | 2020-02-07 | 2023-01-10 | Shure Acquisition Holdings, Inc. | System and method for automatic adjustment of reference gain |
US11706562B2 (en) | 2020-05-29 | 2023-07-18 | Shure Acquisition Holdings, Inc. | Transducer steering and configuration systems and methods using a local positioning system |
JP2024505068A (en) | 2021-01-28 | 2024-02-02 | シュアー アクイジッション ホールディングス インコーポレイテッド | Hybrid audio beamforming system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2146816A5 (en) * | 1971-07-20 | 1973-03-02 | Technicon Instr |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3160707A (en) * | 1961-06-29 | 1964-12-08 | Vernon J Meyers | Gain control in response to ambient noise level |
US3296532A (en) * | 1963-04-02 | 1967-01-03 | Raytheon Co | Diversity combiners |
DE1914071B2 (en) * | 1969-03-20 | 1971-07-22 | Blaupunkt Werke GmbH, 3200 Hildes heim | CIRCUIT ARRANGEMENT FOR AUTOMATIC LEVEL CONTROL |
US3755625A (en) * | 1971-10-12 | 1973-08-28 | Bell Telephone Labor Inc | Multimicrophone loudspeaking telephone system |
US3814856A (en) * | 1973-02-22 | 1974-06-04 | D Dugan | Control apparatus for sound reinforcement systems |
JPS5337558Y2 (en) * | 1973-08-27 | 1978-09-12 |
-
1975
- 1975-05-09 US US05/575,951 patent/US3992584A/en not_active Expired - Lifetime
-
1976
- 1976-08-26 GB GB35557/76A patent/GB1516256A/en not_active Expired
- 1976-08-30 FR FR7626091A patent/FR2363254A1/en active Granted
- 1976-09-04 DE DE2640006A patent/DE2640006C2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2146816A5 (en) * | 1971-07-20 | 1973-03-02 | Technicon Instr |
Also Published As
Publication number | Publication date |
---|---|
GB1516256A (en) | 1978-06-28 |
US3992584A (en) | 1976-11-16 |
DE2640006A1 (en) | 1978-03-09 |
DE2640006C2 (en) | 1983-11-10 |
FR2363254B1 (en) | 1981-01-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |